US6082282A - Rolling reef system for the mainsail of a sailing vessel - Google Patents

Rolling reef system for the mainsail of a sailing vessel Download PDF

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Publication number
US6082282A
US6082282A US09/331,878 US33187899A US6082282A US 6082282 A US6082282 A US 6082282A US 33187899 A US33187899 A US 33187899A US 6082282 A US6082282 A US 6082282A
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US
United States
Prior art keywords
boom
leech
mast
mainsail
disc
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Expired - Fee Related
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US09/331,878
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English (en)
Inventor
Marcus Claudius Kickert
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Individual
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Individual
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Publication date
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Publication of US6082282A publication Critical patent/US6082282A/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H9/00—Marine propulsion provided directly by wind power
    • B63H9/04—Marine propulsion provided directly by wind power using sails or like wind-catching surfaces
    • B63H9/08—Connections of sails to masts, spars, or the like
    • B63H9/10—Running rigging, e.g. reefing equipment
    • B63H9/1021—Reefing
    • B63H9/1042—Reefing by furling around or inside the boom

Definitions

  • the present invention relates to a rolling reef system for the mainsail of a sailing vessel, as indicated in the preamble to claim 1, and is known from EP-A-0 011 582.
  • a generally known method for reefing the mainsail involves the use of a so-called rolling reef boom, with which the mainsail is reefed by rotating the boom about its longitudinal axis, thus winding the mainsail about the boom.
  • This method has several drawbacks. On account of the bellied shape of the mainsail, a bulge is formed in the under leech of the mainsail as it is being wound around the boom, which makes it impossible or difficult for the under leech to be drawn taut.
  • a reefing system in which the boom comprises a disc for rotating the boom.
  • a guiding element is arranged for guiding the fore leech of the main sail at some distance of the mast. The purpose of this arrangement is to keep the hinge portion of the boom adjacent to the mast free from the main sail when it is wound up on said boom.
  • the present invention aims to improve the method of rolling reefing to such an extent, that the drawbacks as outlined in the foregoing can be avoided in a simple and highly effective manner.
  • this aim is achieved by means of an improved rolling reef system.
  • the battens co-operating with the disc mounted at the front end of the boom, ensure that the under leech of the mainsail is automatically drawn taut towards the rear when it is wound around the boom. Since the fore leech constitutes of a rope of relatively small diameter, which is guided in a guiding profile separately secured to the mast, the sagging or drooping of the boom is effectively prevented.
  • the proposed measures ensure together that the mainsail can be reefed quickly and easily by wrapping it around the boom, without any of the above mentioned problems occurring.
  • FIG. 1 schematically represents a sailing vessel, equipped with a rolling reef system according to the present invention:
  • FIG. 2 schematically shows detail II from FIG. 1 on a larger scale
  • FIG. 3 shows a cross-section along line III--III in FIG. 2 on an even larger scale.
  • a sailing vessel is schematically represented in FIG. 1, which vessel comprises a mast 2, a boom 3 and a mainsail 4.
  • the mainsail has an after leech 5, a fore leech 6, which is connected to the mast 2 and an under leech 7 where the mainsail is connected to the boom 3.
  • FIG. 2 This figure shows a section of the mast 2 and the section of the boom 3 that is connected to this mast.
  • the boom 3 is connected to the mast in the usual manner, such that it is rotatable about its centre axis 8 and swivellable about the mast 2.
  • a disc 9 At the end of the boom adjacent to the mast a disc 9 is mounted, which extends coaxially to the centre axis 8, said disc having a significantly larger diameter than the boom itself.
  • the disc 9 On its periphery, the disc 9 has a V-shaped groove through which a rope (not drawn) can be guided in order to effect the rotation of the boom 3 about its centre axis 8.
  • the mainsail is wound further around the boom, until the upper batten 12 is disposed under the boom 3 and also abuts the disc 9.
  • the battens 11 and 12 consist of a flexible plastic material. It will be clear that a larger or smaller number of these battens may be present in the mainsail. In large sailing vessels you will often find three of these battens, whereas in some cases even four may be desirable.
  • the fore leech of the mainsail comprises a rope 13, having a diameter of approximately 5 mm.
  • This rope is connected to the mast by means of a guiding profile, referred to as a whole by reference numeral 14, and extending practically over the entire height of the mainsail along the mast 2.
  • the guiding profile 14 actually consists of a thin, narrow strip of a suitable plastic material, said strip being provided on the one front elongated side with a number of interspaced shackles 15, each being connected with a carriage or slide 16, which in turn is guided in a guiding groove 17 of the mast 2 in a conventional manner.
  • the other rear elongated side of the guiding profile strip 14 extends parallel to the front side and faces away from the mast 2 at a location to the rear of the disc 9.
  • the guiding profile strip 14 includes a guiding track 18, defining an inner space 19 being substantially circular in cross-section, said space 19 having a narrow longitudinal slit-shaped opening 20.
  • the rear side of the guiding profile strip 14 is located to the rear of the disc 9.
  • the said inner space 19 of the rear side of the guiding profile strip 14 has a diameter, which is a little larger than that of the rope 13, enabling the rope to be slidably accommodated by this space and to be retained therein, whereas the cloth of the mainsail extends outwards through opening 20.
  • the fore leech 6 of the mainsail is thus connected over its entire height to the guiding profile 14, this guiding profile being able to swivel along with the mainsail to a limited extent in relation to the mast 2.
  • the width of the guiding profile 14 has been chosen such that the extension of the track 18 towards the bottom is aligned with the end of the boom 3 near the disc 9. Together with the chosen width of the band, this configuration enables the mainsail to be wrapped about the boom without any local bulging occurring at the end of the boom disposed near the mast.
  • the system according to the invention can easily be mounted on existing ships. For this purpose one merely requires a number of adjustments to the mainsail and the boom. Prior to installation, the guiding profile 14 can be hoisted up along the mast 2 and subsequently secured in that position.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Artificial Fish Reefs (AREA)
  • Catching Or Destruction (AREA)
  • Control Of Multiple Motors (AREA)
US09/331,878 1997-01-06 1998-01-05 Rolling reef system for the mainsail of a sailing vessel Expired - Fee Related US6082282A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
NL1004933A NL1004933C2 (nl) 1997-01-06 1997-01-06 Rolreefsysteem voor het grootzeil van een zeilboot.
NL1004933 1997-01-06
PCT/NL1998/000003 WO1998030442A1 (en) 1997-01-06 1998-01-05 Rolling reef system for the mainsail of a sailing vessel

Publications (1)

Publication Number Publication Date
US6082282A true US6082282A (en) 2000-07-04

Family

ID=19764166

Family Applications (1)

Application Number Title Priority Date Filing Date
US09/331,878 Expired - Fee Related US6082282A (en) 1997-01-06 1998-01-05 Rolling reef system for the mainsail of a sailing vessel

Country Status (9)

Country Link
US (1) US6082282A (nl)
EP (1) EP0948440B1 (nl)
AT (1) ATE209588T1 (nl)
AU (1) AU720374B2 (nl)
CA (1) CA2276341C (nl)
DE (1) DE69802662D1 (nl)
NL (1) NL1004933C2 (nl)
NZ (1) NZ337108A (nl)
WO (1) WO1998030442A1 (nl)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040042200A1 (en) * 1998-11-23 2004-03-04 Hurwitz Marni M. Marine craft and apparatus including electroluminescent auxiliary illumination
US20060174810A1 (en) * 2005-02-04 2006-08-10 Yamin Ma Simple but effective sail handling system that allows sail control to be carried out single-handed from the safety of the cockpit
WO2015116598A1 (en) * 2014-01-28 2015-08-06 Harken, Incorporated Top down furling system

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3132620A (en) * 1960-01-11 1964-05-12 Andrew T Court Sailboat
US4324192A (en) * 1978-11-07 1982-04-13 Pierre Ingouf Devices for setting a sail
FR2693975A1 (fr) * 1992-07-24 1994-01-28 Proengin Enrouleur-réducteur de voilure pour grand-voiles à lattes.
US5632215A (en) * 1993-10-22 1997-05-27 Moessnang; Joerg Roller reefing boom system

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK167181B1 (da) * 1986-01-17 1993-09-13 Mogens Pedersen Rullebom til en sejlbaad
NL9400478A (nl) * 1993-08-26 1995-03-16 Rondal Bv Giek voor een zeilboot.

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3132620A (en) * 1960-01-11 1964-05-12 Andrew T Court Sailboat
US4324192A (en) * 1978-11-07 1982-04-13 Pierre Ingouf Devices for setting a sail
FR2693975A1 (fr) * 1992-07-24 1994-01-28 Proengin Enrouleur-réducteur de voilure pour grand-voiles à lattes.
US5632215A (en) * 1993-10-22 1997-05-27 Moessnang; Joerg Roller reefing boom system

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040042200A1 (en) * 1998-11-23 2004-03-04 Hurwitz Marni M. Marine craft and apparatus including electroluminescent auxiliary illumination
US7220011B2 (en) * 1998-11-23 2007-05-22 Hurwitz Marni M Marine craft and apparatus including electroluminescent auxiliary illumination
US20060174810A1 (en) * 2005-02-04 2006-08-10 Yamin Ma Simple but effective sail handling system that allows sail control to be carried out single-handed from the safety of the cockpit
WO2015116598A1 (en) * 2014-01-28 2015-08-06 Harken, Incorporated Top down furling system
US9694890B2 (en) 2014-01-28 2017-07-04 Harken, Incorporated Top down furling system

Also Published As

Publication number Publication date
DE69802662D1 (de) 2002-01-10
WO1998030442A1 (en) 1998-07-16
ATE209588T1 (de) 2001-12-15
AU5498798A (en) 1998-08-03
CA2276341C (en) 2005-05-24
CA2276341A1 (en) 1998-07-16
EP0948440A1 (en) 1999-10-13
EP0948440B1 (en) 2001-11-28
NZ337108A (en) 2000-12-22
AU720374B2 (en) 2000-06-01
NL1004933C2 (nl) 1998-07-08

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Effective date: 20120704